Patent US4067657A successfully refreshed from Google Patents.
US4067657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cam lock retaining means for ripper tips
Assignee: Caterpillar Inc
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Filing: 1976-02-17
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Granted: 1978-01-10
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Expires: 1996-02-17
Abstract
Abstract A ripper tip is mounted on the end of a shank by a cylindrical pin disposed in aligned bores formed therethrough. A camming member is reciprocally mounted in each end of the pin to each have a first end thereof engage the tip in bearing contact therewith. A set screw is threadably mounted in the pin to engage a second end of each camming member to urge it into such bearing contact. In a first described embodiment of this invention, the camming member is disposed perpendicular relative to the longitudinal axis of the pin and the set screw is disposed in parallel relationship relative thereto whereas in a second embodiment the camming member and set screw are each disposed at an acute angle relative to the longitudinal axis of the pin.
Inventors
- 👤 Willard O. Kaarlela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:26
CPC Classifications
E; E02; E02F; E02F9/00; E02F9/28; E02F9/2808; E02F9/2816; E02F9/2833; E02F9/2841; F; F16; F16B; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T403/00; Y10T403/59; Y10T403/598; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7086
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
188 words
A work tool for construction vehicles comprising a support member, a tip mounted on said support member, a pin having a longitudinal axis and disposed in aligned bores formed through said support member and said tip, the bores formed through said tip each having an oblong configuration defined by major and minor axes and cam lock retaining means mounted on said pin for locking said support member, tip and pin together comprising a single camming member movably mounted in said pin and having a first end thereof engaging said tip in bearing contact therewith, said camming member movable in the direction of the major axis of a respective one of the bores formed through said tip, and camming means movably mounted in said pin and having an end thereof engaging a second end of said camming member for urging the first end of said camming member into its bearing contact with said tip and for simultaneously urging said pin in bearing contact with said support member on an opposite side of said pin from whereat the first end of said camming member engages said tip in bearing contact.
Claim 2
Dependent Claim
188 words
A work tool for construction vehicles comprising a support member, a tip mounted on said support member, a pin having a longitudinal axis and disposed in aligned bores formed through said support member and said tip, the bores formed through said tip each having an oblong configuration defined by major and minor axes and cam lock retaining means mounted on said pin for locking said support member, tip and pin together comprising a single camming member movably mounted in said pin and having a first end thereof engaging said tip in bearing contact therewith, said camming member movable in the direction of the major axis of a respective one of the bores formed through said tip, and camming means movably mounted in said pin and having an end thereof engaging a second end of said camming member for urging the first end of said camming member into its bearing contact with said tip and for simultaneously urging said pin in bearing contact with said support member on an opposite side of said pin from whereat the first end of said camming member engages said tip in bearing contact.
Claim 3
Dependent Claim
29 words
The work tool of claim 1 wherein said support member constitutes a shank and said tip constitutes a hardened ripper tip mounted on a lower end of said shank.
Claim 4
Dependent Claim
64 words
The work tool of claim 1 wherein said camming member is closely fitted within a bore formed in said pin for reciprocation therein between a first position wherein the first end thereof is disposed in at least substantial flush relationship relative to outer surface portions of said pin and a second position whereat the first end thereof engages said tip in bearing contact therewith.
Claim 5
Dependent Claim
28 words
The work tool of claim 3 wherein a major axis of said camming member is disposed at least substantially perpendicular relative to the longitudinal axis of said pin.
Claim 6
Dependent Claim
24 words
The work tool of claim 3 wherein said camming member is disposed at an acute angle relative to the longitudinal axis of said pin.
Claim 7
Dependent Claim
12 words
The work tool of claim 5 wherein said angle closely approximates 60°.
Claim 8
Dependent Claim
15 words
The work tool of claim 3 wherein said camming member is shaped as a parallelepiped.
Claim 9
Dependent Claim
11 words
The work tool of claim 7 wherein said parallelepiped is square.
Claim 10
Dependent Claim
13 words
The work tool of claim 7 wherein said parallelepiped is oblique and rectangular.
Claim 11
Dependent Claim
19 words
The work tool of claim 1 wherein said camming means constitutes a set screw threadably mounted in said pin.
Claim 12
Dependent Claim
26 words
The work tool of claim 10 wherein an inner end of said set screw is conically shaped and engages the second end of said camming member.
Claim 13
Dependent Claim
27 words
The work tool of claim 10 wherein a longitudinal axis of said set screw is disposed in parallel relationship relative to the longitudinal axis of said pin.
Claim 14
Dependent Claim
34 words
The work tool of claim 12 wherein a major axis of said camming member is disposed in at least substantial perpendicular relationship relative to the longitudinal axes of said pin and said set screw.
Claim 15
Dependent Claim
28 words
The work tool of claim 10 wherein the longitudinal axis of said set screw is disposed at an acute angle relative to the longitudinal axis of said pin.
Claim 16
Dependent Claim
14 words
The work tool of claim 14 wherein said angle at least closely approximates 30°.
Claim 17
Dependent Claim
22 words
The work tool of claim 1 wherein one of said cam lock retaining means is mounted on each end of said pin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |